Pallet hoist attachment



March 4, 1952 R. P. STURGIS 2,583,330

PALLET HOIST ATTACHMENT Filed Sept. 26, 1950 2 SHEETS-SHEET 1HiiillHHHiiIlimmW- HHHIUHHHIHHum...

AGENT 0R ATTORNE I INVENTOR March 4, 1952 R. P. STURGIS PALLET HOISTATTACHMENT 2 SHEETS-SHEET 2 Filed Sept. 26, 1950 I HNVENTOR air n 1.57%?

WM HIE/v7 0/? ATTORNEY Patented Mar. 4, 1952 PALLET HOIST ATTACHMENTRobert P. Sturgis, Woodbury, N. J., assignor to Socony-Vacuum OilCompany, Incorporated, a corporation of New- York Application September26, 1950, Serial No. 186,749

1 Claim. (Cl. 294-67) This invention. relates to. a device forattachment to a hoist whereby loaded pallets may be readily handled. Theinvention is particularly well adapted for use in loading and unloadinga shaft Mextendi'ng alongthe side of thedevice and rigidly fixed to thebox frame Ill; The two corner posts I2 on the other side are connectedby linkage to be presently described to hinged ships holds. 5 shafts I5extending across the top of front and During recent years, the use ofpallets for rear portions of the hoist attachment. handling goods ofvarious kinds has rapidly in- Each of the hinged shafts I5 isconstructed for creased with marked economies in storage and hinging ona pivot I6 and each is rigidly fixed at transportation The technique ofusing pallets one end to shaft [1, extending along one side of involvesloading a predetermined number of the top of the device. At the otherend, each packages onto a pallet of wood or steel adapted to hingedshaft I5 is rigidly fixed to shaft I8 exbe lifted and transported by afork truck. In tending along the side of the device opposite to thecases of cartons, drums and other relatively shaft IT. The shafts I1 andI8 are rotatably rigid elements of regular shape; one loaded palletmounted in ears I9 aifixed to the respective may be stacked on another tprovide tiers of corner posts I2. A latch is rotatably mounted loadedpallets. Each pallet is readily handled on shaft 2| in a latch guide 22.The latch is proas a unit by fork trucks and a single truck opvided withtwo recesses adapted to engage a latch erator is able to handle largequantities of merpin 23 on the hinged shaft I5. A lever 24 fixedchandise rapidly with no manual strain. to the shaft 21 is provided fordisengaging the Due to their small size and short turning radius, 20latch 20 from the latch pin 23, the Weight of the fork trucks can handleloaded pallets in restricted lever 24 holding the latch no m yengagedspaoes, such as ships holds, railway cars and Referringspecifically to Figure 1, the right trucks. Difficulties arise when itbecomes necesfrom? a right real Corners of e bO frame "I sary to raiseor lower loaded pallets in spaces carry a release Shaft 25 rotatablymountedt which do not permit of installing suitable ramps. theextremities of release shaft 25 are release For example, transfer ofpallets from a dock to Cams 26 Secured thereto and Operated y handles a,hold or from a hold to a dock cannot be 1 21. A short link 28 is mountedat one end in the complished by fork truck. The present invention mannershown on release cam 26 for rotation provides a ready mechanism, easilyhandled by with respect thereto. The other end of short one man, forhoisting loaded pallets. 3o link 28 is rotatably connected to one end ofa It is, accordingly, a principal object of the inlonger ink 29. Th ot rnd f lo r k 29 vention to provide means for hoisting loaded palisrigidly fi d t0 S aft I8. lets which are readily engaged or disengagedAt their bases, corner posts I2 are affixed to f om th pallets by impleoperatigns Ah tan angle iron to extendin along the sides of the standingfeature of the invention is the relatively I hOiSt attachment d restingo foot plates 3!- small vertical dimension of the device whereby TWOCasters are p d at the mt 0f t e it becomes unnecessary t id h ddeviceto be used in guiding the same against a room in excess of the height ofa loaded pallet Wall When hoisting it in a narrow S w y 01 f rmaneuvering th h i t tt h t hereinother situation in which rotation ofthe load is after described. 40 u desirable.

These and th objects and advantages of It willbe apparent that theprovision of operatthe invention will be apparent from the followingint? handles 24 and 27 on both from? and real description of a specificembodiment of the of the device makes it possible to control it fromvention illustrated in the annexed drawings either face. The operationis essentially the wherein; 15 same from front or rear. Referring againspe- Figure 1 is a front elevation of the hoist atcifically to Figure 1,the overatorpulls up on tachment; handle 24. releasing latch 2:: fromengagement Figure 2 is a fr ment r plan the of; and with pin 23. Thispermits the hinged shaft I5 to Figure 3 is a side elevation of theattachment. jackmfe about its Pivot and such action is The hoistattachment comprises a box frame caused by moving handle 21 t0 theright- AS t e [0 provided t th center it a hook bar 3 t hinged shaft I5jacknifes, its effective length is receive the hook of a hoist line.Corner posts I2 decreased, drawing together e D d es of the are providedat the four corners of the hoist atw sides d p n h o m ed s. Thetachment. The two corner posts I2 on one side device is now dropped overa loaded pallet and of the device carry ears l3 pivotally mounted on thehandle 27 is moved to the left after release of the latch 20. This drawsthe hinged shaft l5 down, pushing out the upper edges and drawingtogether the angle irons 30 at the bases of corner posts I2 to engagethe under surface of the pallet. As the hinged shaft I5 comes into theposition shown in Figure 1, the lower recess of latch 20 engages thelatch pin 23 rigidly looking the device in engagement with the pallet.The latter may then be hoisted to a desired position and the hoistattachment disengaged by releasing the latch 20 and rotating handle 21to the right.

I claim:

A hoist attachment comprising a rectangular, horizontal main frame,means at the center of said frame to receive a hoist hook, a Verticalside frame pivotally connected intermediate its upper and lower edges toone side of said main frame, a horizontal upper frame overlying saidmain frame and pivotally connected along one side to said side frame,said upper frame being hinged along a median line thereof parallel tosaid side frame, a latch pin on said upper frame, a latch mounted onsaid main frame and adapted to engage said latch pin for retaining saidupper frame parallel to said main frame, means to move said latch todisengage the same from said pin, a second side frame pivotallyconnected along its upper edge to said upper frame, a pendent linkrigidly fixed to and depending from said upper frame adjacent saidsecond side frame, an operating link pivotally connected to said mainframe adjacent said second side frame, means to rotate said operatinglink about its pivot on said main frame, a short link pivotallyconnected at one end to said operating link at a pivot remote from thesaid pivot thereof on said main frame and pivotally connected at theother end to said pendent link at a pivot below said upper frame, andmeans at the bottoms of said side frames to engage a load.

ROBERT P. STURGIS.

No references cited.

